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The correct answer to this question is option 2, which states that both assertion A and reason R are true but R is not a correct explanation of A. Let`s break down each option to understand why option 2 is the correct choice.
Option 1 states that both A and R are true and R is the correct explanation of A. This is incorrect because while A is true - CFC production is detrimental to the ozone layer - the reason provided in R is not a correct explanation of A. The comparison between the amount of CFC produced in India in one year and the entire world in a day or two is not mentioned in the assertion or reason and therefore cannot be used as a correct explanation.
Option 3 states that A is true but R is false. This is also incorrect because both A and R are true.
Option 4 states that A is false but R is true. This is incorrect because A is true - CFC production is detrimental to the ozone layer.
In conclusion, option 2 is the correct answer as it correctly identifies that both A and R are true, but R is not a correct explanation of A.